TPS23750
TPS23770
www.ti.com
SLVS590A–JULY 2005–REVISED AUGUST 2005
DC/DC CONTROLLER SECTION (continued)
RTN = VSS for this section only.
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
15 18.75
1
UNIT
VSENP-SEN = 1.5 V, TMR = RSN, IFB = 0 µA and 10 µA,
RFB = ∆VFB / ∆ IFB
Translator output resistance
11.25
kΩ
SEN sinking current
SENP sinking current
VSENP-SEN = 1.50 V, VTMR = RSN
VSENP-SEN = 1.50 V, VTMR = RSN
µA
µA
17
22.5
28
PoE SECTION
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
DETECTION (DET)
Offset current
DET open, VDD = VRTN = 1.9 V, Measure IVDD + IRTN + ISENP
DET open, VDD = VRTN = 10.1 V, Measure IVDD + IRTN + ISENP
VDET = VDD = 57 V, Measure IDET
0.45
5.6
0.3
55
4
12
µA
µA
µA
Sleep current
DET leakage current
5
VDD = 1.4 V
51.5
395
58.7
417
RTN = VDD, Measure IVDD + IRTN
IDET + ISENP
+
Detection current
µA
VDD = 10.1 V
411
CLASSIFICATION (CLASS)
RTN = VDD, Measure IVDD + IRTN + IDET + ISENP
RCLASS = 4420 Ω, 13 ≤ VDD ≤ 21 V
RCLASS = 953 Ω, 13 ≤ VDD ≤ 21 V
RCLASS = 549 Ω, 13 ≤ VDD ≤ 21 V
RCLASS = 357 Ω, 13 ≤ VDD ≤ 21 V
RCLASS = 255 Ω, 13 ≤ VDD ≤ 21 V
Regulator turns on, VDD rising
Hysteresis
2.2
10.3
17.7
27.1
38.0
10.2
1
2.5
10.6
18.3
28.0
39.4
11.3
1.75
21.9
0.83
2.8
11.3
19.5
29.5
41.2
13.0
3
ICLASS
Classification current
mA
VCL_ON
VCL_H
VCU_OFF
VCU_H
PASS DEVICE (RTN)
On resistance
Classification lower threshold
V
V
Regulator turns off, VDD rising
Hysteresis
21
23
Classification upper threshold
0.5
1
IRTN = 300 mA
VRTN = 1 V
0.60
450
140
1
515
180
Ω
Current limit
Inrush limit
405
100
mA
mA
IINR
VRTN = 1.6 V
CONTROL
Inrush current state termination
Standard UVLO threshold
Legacy UVLO threshold
IRTN falling from IINR, IRTN/IINR
0.85
1.00
UVLO
VUVLO_R
VUVLO_F
VDD rising, monitor IRTN
VDD falling, monitor IRTN
Hysteresis
38.4
29.6
8.3
39.3
30.5
8.8
40.4
31.5
9.1
V
V
VUVLO_R
VUVLO_F
VDD rising, monitor IRTN
VDD falling, monitor IRTN
Hysteresis
34.1
29.7
4.3
35.1
30.5
4.5
36.0
31.4
4.8
5
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